mount_msdosfs.c revision 121007
1/* $NetBSD: mount_msdos.c,v 1.18 1997/09/16 12:24:18 lukem Exp $ */ 2 3/* 4 * Copyright (c) 1994 Christopher G. Demetriou 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Christopher G. Demetriou. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33#ifndef lint 34static const char rcsid[] = 35 "$FreeBSD: head/sbin/mount_msdosfs/mount_msdosfs.c 121007 2003-10-11 12:05:05Z fjoe $"; 36#endif /* not lint */ 37 38#include <sys/param.h> 39#include <sys/mount.h> 40#include <sys/stat.h> 41#include <sys/module.h> 42#include <sys/iconv.h> 43 44#include <fs/msdosfs/msdosfsmount.h> 45 46#include <ctype.h> 47#include <err.h> 48#include <grp.h> 49#include <locale.h> 50#include <pwd.h> 51#include <stdio.h> 52/* must be after stdio to declare fparseln */ 53#include <libutil.h> 54#include <stdlib.h> 55#include <string.h> 56#include <sysexits.h> 57#include <unistd.h> 58 59#include "mntopts.h" 60 61#define TRANSITION_PERIOD_HACK 62 63/* 64 * XXX - no way to specify "foo=<bar>"-type options; that's what we'd 65 * want for "-u", "-g", "-m", "-M", "-L", "-D", and "-W". 66 */ 67static struct mntopt mopts[] = { 68 MOPT_STDOPTS, 69 MOPT_FORCE, 70 MOPT_SYNC, 71 MOPT_UPDATE, 72#ifdef MSDOSFSMNT_GEMDOSFS 73 { "gemdosfs", 0, MSDOSFSMNT_GEMDOSFS, 1 }, 74#endif 75 { "shortnames", 0, MSDOSFSMNT_SHORTNAME, 1 }, 76 { "longnames", 0, MSDOSFSMNT_LONGNAME, 1 }, 77 { "nowin95", 0, MSDOSFSMNT_NOWIN95, 1 }, 78 { NULL } 79}; 80 81static gid_t a_gid(char *); 82static uid_t a_uid(char *); 83static mode_t a_mask(char *); 84static void usage(void) __dead2; 85static int set_charset(struct msdosfs_args *); 86 87int 88main(argc, argv) 89 int argc; 90 char **argv; 91{ 92 struct msdosfs_args args; 93 struct stat sb; 94 int c, mntflags, set_gid, set_uid, set_mask, set_dirmask; 95 char *dev, *dir, mntpath[MAXPATHLEN], *csp; 96 97 mntflags = set_gid = set_uid = set_mask = set_dirmask = 0; 98 (void)memset(&args, '\0', sizeof(args)); 99 args.magic = MSDOSFS_ARGSMAGIC; 100 101 args.cs_win = NULL; 102 args.cs_dos = NULL; 103 args.cs_local = NULL; 104#ifdef TRANSITION_PERIOD_HACK 105 while ((c = getopt(argc, argv, "sl9u:g:m:M:o:L:D:W:")) != -1) { 106#else 107 while ((c = getopt(argc, argv, "sl9u:g:m:M:o:L:D:")) != -1) { 108#endif 109 switch (c) { 110#ifdef MSDOSFSMNT_GEMDOSFS 111 case 'G': 112 args.flags |= MSDOSFSMNT_GEMDOSFS; 113 break; 114#endif 115 case 's': 116 args.flags |= MSDOSFSMNT_SHORTNAME; 117 break; 118 case 'l': 119 args.flags |= MSDOSFSMNT_LONGNAME; 120 break; 121 case '9': 122 args.flags |= MSDOSFSMNT_NOWIN95; 123 break; 124 case 'u': 125 args.uid = a_uid(optarg); 126 set_uid = 1; 127 break; 128 case 'g': 129 args.gid = a_gid(optarg); 130 set_gid = 1; 131 break; 132 case 'm': 133 args.mask = a_mask(optarg); 134 set_mask = 1; 135 break; 136 case 'M': 137 args.dirmask = a_mask(optarg); 138 set_dirmask = 1; 139 break; 140 case 'L': 141 if (setlocale(LC_CTYPE, optarg) == NULL) 142 err(EX_CONFIG, "%s", optarg); 143 csp = strchr(optarg,'.'); 144 if (!csp) 145 err(EX_CONFIG, "%s", optarg); 146 args.cs_local = malloc(ICONV_CSNMAXLEN); 147 if (args.cs_local == NULL) 148 err(EX_OSERR, "malloc()"); 149 strncpy(args.cs_local, 150 kiconv_quirkcs(csp + 1, KICONV_VENDOR_MICSFT), 151 ICONV_CSNMAXLEN); 152 break; 153 case 'D': 154 args.cs_dos = malloc(ICONV_CSNMAXLEN); 155 if (args.cs_dos == NULL) 156 err(EX_OSERR, "malloc()"); 157 strncpy(args.cs_dos, optarg, ICONV_CSNMAXLEN); 158 break; 159 case 'o': 160 getmntopts(optarg, mopts, &mntflags, &args.flags); 161 break; 162#ifdef TRANSITION_PERIOD_HACK 163 case 'W': 164 args.cs_local = malloc(ICONV_CSNMAXLEN); 165 if (args.cs_local == NULL) 166 err(EX_OSERR, "malloc()"); 167 args.cs_dos = malloc(ICONV_CSNMAXLEN); 168 if (args.cs_dos == NULL) 169 err(EX_OSERR, "malloc()"); 170 if (strcmp(optarg, "iso22dos") == 0) { 171 strcpy(args.cs_local, "ISO8859-2"); 172 strcpy(args.cs_dos, "CP852"); 173 } else if (strcmp(optarg, "iso72dos") == 0) { 174 strcpy(args.cs_local, "ISO8859-7"); 175 strcpy(args.cs_dos, "CP737"); 176 } else if (strcmp(optarg, "koi2dos") == 0) { 177 strcpy(args.cs_local, "KOI8-R"); 178 strcpy(args.cs_dos, "CP866"); 179 } else if (strcmp(optarg, "koi8u2dos") == 0) { 180 strcpy(args.cs_local, "KOI8-U"); 181 strcpy(args.cs_dos, "CP866"); 182 } else { 183 err(EX_NOINPUT, "%s", optarg); 184 } 185 break; 186#endif /* TRANSITION_PERIOD_HACK */ 187 case '?': 188 default: 189 usage(); 190 break; 191 } 192 } 193 194 if (optind + 2 != argc) 195 usage(); 196 197 if (set_mask && !set_dirmask) { 198 args.dirmask = args.mask; 199 set_dirmask = 1; 200 } 201 else if (set_dirmask && !set_mask) { 202 args.mask = args.dirmask; 203 set_mask = 1; 204 } 205 206 dev = argv[optind]; 207 dir = argv[optind + 1]; 208 209 if (args.cs_local) { 210 if (set_charset(&args) == -1) 211 err(EX_OSERR, "msdosfs_iconv"); 212 args.flags |= MSDOSFSMNT_KICONV; 213 } else if (args.cs_dos) { 214 if ((args.cs_local = malloc(ICONV_CSNMAXLEN)) == NULL) 215 err(EX_OSERR, "malloc()"); 216 strcpy(args.cs_local, "ISO8859-1"); 217 if (set_charset(&args) == -1) 218 err(EX_OSERR, "msdosfs_iconv"); 219 args.flags |= MSDOSFSMNT_KICONV; 220 } 221 222 /* 223 * Resolve the mountpoint with realpath(3) and remove unnecessary 224 * slashes from the devicename if there are any. 225 */ 226 (void)checkpath(dir, mntpath); 227 (void)rmslashes(dev, dev); 228 229 args.fspec = dev; 230 args.export.ex_root = -2; /* unchecked anyway on DOS fs */ 231 if (mntflags & MNT_RDONLY) 232 args.export.ex_flags = MNT_EXRDONLY; 233 else 234 args.export.ex_flags = 0; 235 if (!set_gid || !set_uid || !set_mask) { 236 if (stat(mntpath, &sb) == -1) 237 err(EX_OSERR, "stat %s", mntpath); 238 239 if (!set_uid) 240 args.uid = sb.st_uid; 241 if (!set_gid) 242 args.gid = sb.st_gid; 243 if (!set_mask) 244 args.mask = args.dirmask = 245 sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 246 } 247 248 if (mount("msdosfs", mntpath, mntflags, &args) < 0) 249 err(EX_OSERR, "%s", dev); 250 251 exit (0); 252} 253 254gid_t 255a_gid(s) 256 char *s; 257{ 258 struct group *gr; 259 char *gname; 260 gid_t gid; 261 262 if ((gr = getgrnam(s)) != NULL) 263 gid = gr->gr_gid; 264 else { 265 for (gname = s; *s && isdigit(*s); ++s); 266 if (!*s) 267 gid = atoi(gname); 268 else 269 errx(EX_NOUSER, "unknown group id: %s", gname); 270 } 271 return (gid); 272} 273 274uid_t 275a_uid(s) 276 char *s; 277{ 278 struct passwd *pw; 279 char *uname; 280 uid_t uid; 281 282 if ((pw = getpwnam(s)) != NULL) 283 uid = pw->pw_uid; 284 else { 285 for (uname = s; *s && isdigit(*s); ++s); 286 if (!*s) 287 uid = atoi(uname); 288 else 289 errx(EX_NOUSER, "unknown user id: %s", uname); 290 } 291 return (uid); 292} 293 294mode_t 295a_mask(s) 296 char *s; 297{ 298 int done, rv; 299 char *ep; 300 301 done = 0; 302 rv = -1; 303 if (*s >= '0' && *s <= '7') { 304 done = 1; 305 rv = strtol(optarg, &ep, 8); 306 } 307 if (!done || rv < 0 || *ep) 308 errx(EX_USAGE, "invalid file mode: %s", s); 309 return (rv); 310} 311 312void 313usage() 314{ 315#ifdef TRANSITION_PERIOD_HACK 316 fprintf(stderr, "%s\n%s\n%s\n", 317 "usage: mount_msdosfs [-o options] [-u user] [-g group] [-m mask] [-M mask]" 318 " [-s] [-l] [-9] [-L locale] [-D dos-codepage] [-W table]" 319 " bdev dir"); 320#else 321 fprintf(stderr, "%s\n%s\n", 322 "usage: mount_msdosfs [-o options] [-u user] [-g group] [-m mask] [-M mask]", 323 " [-s] [-l] [-9] [-L locale] [-D dos-codepage] bdev dir"); 324#endif 325 exit(EX_USAGE); 326} 327 328int 329set_charset(struct msdosfs_args *args) 330{ 331 int error; 332 333 if (modfind("msdosfs_iconv") < 0) 334 if (kldload("msdosfs_iconv") < 0 || modfind("msdosfs_iconv") < 0) { 335 warnx( "cannot find or load \"msdosfs_iconv\" kernel module"); 336 return (-1); 337 } 338 339 if ((args->cs_win = malloc(ICONV_CSNMAXLEN)) == NULL) 340 return (-1); 341 strncpy(args->cs_win, ENCODING_UNICODE, ICONV_CSNMAXLEN); 342 error = kiconv_add_xlat16_cspair(args->cs_win, args->cs_local, 0); 343 if (error) 344 return (-1); 345 error = kiconv_add_xlat16_cspair(args->cs_local, args->cs_win, 0); 346 if (error) 347 return (-1); 348 if (args->cs_dos) { 349 error = kiconv_add_xlat16_cspair(args->cs_dos, args->cs_local, KICONV_FROM_UPPER); 350 if (error) 351 return (-1); 352 error = kiconv_add_xlat16_cspair(args->cs_local, args->cs_dos, KICONV_LOWER); 353 if (error) 354 return (-1); 355 } else { 356 if ((args->cs_dos = malloc(ICONV_CSNMAXLEN)) == NULL) 357 return (-1); 358 strcpy(args->cs_dos, args->cs_local); 359 error = kiconv_add_xlat16_cspair(args->cs_local, args->cs_local, 360 KICONV_FROM_UPPER | KICONV_LOWER); 361 if (error) 362 return (-1); 363 } 364 365 return (0); 366} 367